tests/spec/ati_fragment_shader/render-sources.c

   1 /*
   2  * Copyright © 2017 Miklós Máté
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 /**
  25  * Tests rendering with GL_ATI_fragment_shader:
  26  * - various data sources for calculations in fragment shader
  27  *   - texture coordinates
  28  *   - texture sample
  29  *   - constant
  30  *   - primary color
  31  *   - secondary interpolator
  32  *   - one, zero
  33  * - switch between named fragment shaders
  34  * - use undefined default shader (rendering is undefined but shouldn't crash)
  35  */
  36
  37 #include "piglit-util-gl.h"
  38
  39 PIGLIT_GL_TEST_CONFIG_BEGIN
  40
  41         config.supports_gl_compat_version = 10;
  42         config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
  43
  44 PIGLIT_GL_TEST_CONFIG_END
  45
  46 static const float color1[] = {0.2, 0.3, 0.8};
  47 static const float color2[] = {0.9, 0.8, 0.3};
  48 static const float texcoord[] = {0.2, 0.7, 0.4};
  49 static const float texcolor[] = {0.8, 0.1, 0.7};
  50
  51 static float result_const[] = {0.0, 0.0, 0.0};
  52 static float result_tex[] = {0.0, 0.0, 0.0};
  53 static float result_color[] = {0.0, 0.0, 0.0};
  54
  55 static GLuint tex;
  56
  57 enum {
  58         SHADER_TEX = 1,
  59         SHADER_CONST,
  60         SHADER_COLOR,
  61 };
  62
  63 enum piglit_result
  64 piglit_display(void)
  65 {
  66         bool pass = true;
  67
  68         piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
  69
  70         glClearColor(1.0, 0.0, 0.0, 1.0);
  71         glClear(GL_COLOR_BUFFER_BIT);
  72
  73         glColor3fv(color1);
  74         glSecondaryColor3fvEXT(color2);
  75         glTexCoord3fv(texcoord);
  76
  77         glEnable(GL_TEXTURE_2D);
  78
  79         glEnable(GL_FRAGMENT_SHADER_ATI);
  80         glBindFragmentShaderATI(0);
  81         piglit_draw_rect(0, 0,
  82                          piglit_width / 4, piglit_height);
  83         glBindFragmentShaderATI(SHADER_CONST);
  84         piglit_draw_rect(piglit_width / 4, 0,
  85                          piglit_width / 4, piglit_height);
  86         glBindFragmentShaderATI(SHADER_COLOR);
  87         piglit_draw_rect(2 * piglit_width / 4, 0,
  88                          piglit_width / 4, piglit_height);
  89         glBindFragmentShaderATI(SHADER_TEX);
  90         piglit_draw_rect(3 * piglit_width / 4, 0,
  91                          piglit_width / 4, piglit_height);
  92         glDisable(GL_FRAGMENT_SHADER_ATI);
  93
  94 #if 0
  95         /* Mesa uses fixed-function when the shader is invalid, but
  96          * it's undefined
  97          */
  98         pass = pass && piglit_probe_rect_rgb(0, 0,
  99                                              piglit_width / 4,
 100                                              piglit_height, color1 * texcolor);
 101 #endif
 102         pass = pass && piglit_probe_rect_rgb(piglit_width / 4, 0,
 103                                              piglit_width / 4,
 104                                              piglit_height, result_const);
 105         pass = pass && piglit_probe_rect_rgb(2 * piglit_width / 4, 0,
 106                                              piglit_width / 4,
 107                                              piglit_height, result_color);
 108         pass = pass && piglit_probe_rect_rgb(3 * piglit_width / 4, 0,
 109                                              piglit_width / 4,
 110                                              piglit_height, result_tex);
 111
 112         piglit_present_results();
 113
 114         pass &= piglit_check_gl_error(GL_NO_ERROR);
 115
 116         return pass ? PIGLIT_PASS : PIGLIT_FAIL;
 117 }
 118
 119 void
 120 piglit_init(int argc, char **argv)
 121 {
 122         unsigned u;
 123
 124         piglit_require_extension("GL_ATI_fragment_shader");
 125
 126         /* create shaders that use all possible input sources:
 127          * texcoord, sample, const, zero, one, pri&sec color
 128          */
 129
 130         glBindFragmentShaderATI(SHADER_TEX);
 131         glBeginFragmentShaderATI();
 132         glPassTexCoordATI(GL_REG_1_ATI, GL_TEXTURE0_ARB, GL_SWIZZLE_STR_ATI);
 133         glSampleMapATI(GL_REG_0_ATI, GL_TEXTURE0_ARB, GL_SWIZZLE_STR_ATI);
 134         glColorFragmentOp2ATI(GL_MUL_ATI, GL_REG_0_ATI, GL_NONE, GL_NONE,
 135                         GL_REG_0_ATI, GL_NONE, GL_NONE,
 136                         GL_REG_1_ATI, GL_NONE, GL_NONE);
 137         glEndFragmentShaderATI();
 138
 139         glBindFragmentShaderATI(SHADER_CONST);
 140         glBeginFragmentShaderATI();
 141         glColorFragmentOp3ATI(GL_LERP_ATI, GL_REG_0_ATI, GL_NONE, GL_NONE,
 142                         GL_CON_1_ATI, GL_NONE, GL_NONE,
 143                         GL_ONE, GL_NONE, GL_NONE,
 144                         GL_ZERO, GL_NONE, GL_NONE);
 145         glSetFragmentShaderConstantATI(GL_CON_1_ATI, color2);
 146         glEndFragmentShaderATI();
 147
 148         glBindFragmentShaderATI(SHADER_COLOR);
 149         glBeginFragmentShaderATI();
 150         glColorFragmentOp2ATI(GL_MUL_ATI, GL_REG_0_ATI, GL_NONE, GL_NONE,
 151                         GL_SECONDARY_INTERPOLATOR_ATI, GL_NONE, GL_NONE,
 152                         GL_PRIMARY_COLOR_ARB, GL_NONE, GL_NONE);
 153         glEndFragmentShaderATI();
 154
 155         /* create a texture */
 156
 157         glGenTextures(1, &tex);
 158         glBindTexture(GL_TEXTURE_2D, tex);
 159         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, GL_RGB, GL_FLOAT,
 160                      (void*)texcolor);
 161         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 162         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 163         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
 164         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
 165
 166         /* compute the expected results */
 167
 168         for (u=0; u<3; u++) {
 169                 result_const[u] = color2[u];
 170                 result_tex[u] = texcoord[u] * texcolor[u];
 171                 result_color[u] = color1[u] * color2[u];
 172         }
 173
 174         if (!piglit_check_gl_error(GL_NO_ERROR))
 175                 piglit_report_result(PIGLIT_FAIL);
 176 }